The Eldar
The name given to the Elves by the Vala Oromë when he first found them wandering in the starlight of Cuiviénen. At first, the name was applied to all Elves, but after the summons of the Valar, it came to be used only of the peoples who followed the summons and began the Great Journey.
The Three Kindreds of the Eldar were the Vanyar, the Noldor and the Teleri. All of the Vanyar and Noldor went to Aman (though many of the Noldor later returned to Middle-earth with Fëanor).
Many of the Teleri also journeyed to Valinor, but twice a host of this people turned away from the Journey in Middle-earth; these two kindreds are called Úmanyar, the Eldar not of Aman. The first of these were the Nandor, who turned aside east of the Misty Mountains, and travelled down the River Anduin. The second, the Sindar, tarried in Beleriand seeking their lord, Elwë Singollo.
The Nature of the Elves
Both Elves and Men are the Children of Ilúvatar, and so have much in common, but there are also great differences between the two peoples. Of these, the most significant is that Elves are 'immortal', at least while the World lasts; they do not suffer ageing1 or disease, and if they are slain or wither with grief, they are reincarnated in the Halls of Mandos in Valinor.
Although, unlike Men, the Elves must remain in the world until its ending, they are not bound to Middle-earth. They may if they wish take the straight road, and sail into the Uttermost West, a road that is barred to mortals.
Elves also have far clearer sight and perception than Men; they are naturally aware of many things that are hidden from the Younger Children, but these gifts are not without limit.
Religion
The Elves never had any distinct 'religion' in the sense that Men would understand the word; indeed, the High Elves had travelled to Valinor and lived with the Valar (or 'gods') themselves for many ages before Men came into the world.
Of all the Valar, they most revered Varda Elentári, the spouse of Manwë; and Lady of the Stars. In Middle-earth, they called her Elbereth, Star-Queen, and sang to her across the wide ocean Belegaer. Great respect was also given to Ulmo, especially during the First Age when he aided the Elves against Morgoth.
Caras Galadhon
The tree-city of the Galadhrim; the seat of Celeborn and Galadriel in the realm of Lórien.
Lothlórien
'Lórien of the Blossom', a name for the land to the east of the Misty Mountains more usually called simply Lórien.
Imladris (Rivendell)
The hidden refuge of Elrond Halfelven, founded by Elrond in the Second Age against the assaults of Sauron in Eriador. It lay in a deep valley in the western foothills of the Misty Mountains, and endured, under the protection of Elrond's Ring Vilya, until the War of the Ring and beyond. After the War, the Ring's power ended and Elrond passed over the Sea, but Rivendell itself remained, at least for a time, in the keeping of Elrond's sons Elladan and Elrohir.
Aman (The Undying Lands)
The continent on which the Valar made their home after the destruction of Almaren. There they founded Valinor, and there dwelt the Calaquendi; the Vanyar, the Noldor and those of the Teleri who journeyed from Middle-earth long before the First Age. There were dwellers in Aman before the Valar, though; Ungoliant had long existed in the southern land of Avathar.
To protect their realm from Melkor, the Valar raised a great range of mountains along the borders of Aman; the Pelóri or Mountains of Defence. They also filled the seas eastwards with shadows and Enchanted Isles.
In II 3319, King Ar-Pharazôn of Númenor, having been seduced and corrupted by Sauron, sailed on Aman with a great fleet. The King and his armies were destroyed, as was the land of Númenor, and Aman was taken out of the World. After that catastrophe, only the Elves could reach the Blessed Realm.
(from www.lordoftherings.net)
· Elves are immortal and do not physically age
· Elves do not grow weak as they age, only wiser and more beautiful
· Elves have more beauty than any creatures on earth, but also possess the most extreme happiness and sorrow
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